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Finding the Fourth Proportional to 307,272.46, 424,061.25 and 169,478.38

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Solution

The fourth proportional to 307,272.46, 424,061.25 and 169,478.38 is: 233,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,272.46 : 424,061.25 = 169,478.38 : x
  2. Step 2: Convert to fraction form
    307,272.46/424,061.25 = 169,478.38/x
  3. Step 3: Cross multiply
    307,272.46x = 424,061.25 × 169,478.38
  4. Step 4: Simplify right side
    307,272.46x = 71,869,213,670.78
  5. Step 5: Solve for x
    x = 71,869,213,670.78/307,272.46
  6. Step 6: Final answer
    x = 233,894.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.